Figure 15: Method 2 - Configure Fxo Port On The Ht503: Registration; Figure 16: Method 2 - Configure Fxo Port On The Ht503: Dtmf Settings - Grandstream Networks UCM6100 Series Configuration

Figure 15: Method 2 - Configure FXO Port on the HT503: Registration

Since we are going to use IVR when the call is forwarded to the UCM6100, the UCM6100 will need to be
able to detect the DTMF digits. Configure the HT503 FXO port DTMF settings as below for a initial setup.

Figure 16: Method 2 - Configure FXO Port on the HT503: DTMF Settings

There are a few necessary changes to be made in FXO termination section and Channel Dialing section.
Firmware Version 1.0.1.25 Configuring UCM6100 Series with HT503 Page 15 of 18